Split Math.c into smaller files

Friend said that Math.c was too big and complicated.

src/Math/Vec2f.c

@@ -0,0 +1,153 @@
+#include <BH/Math.h>
+#include <math.h>
+
+
+void BH_Vec2fAdd(const float *a,
+                 const float *b,
+                 float *out)
+{
+    out[0] = a[0] + b[0];
+    out[1] = a[1] + b[1];
+}
+
+
+void BH_Vec2fSub(const float *a,
+                 const float *b,
+                 float *out)
+{
+    out[0] = a[0] - b[0];
+    out[1] = a[1] - b[1];
+}
+
+
+void BH_Vec2fMul(const float *a,
+                 const float *b,
+                 float *out)
+{
+    out[0] = a[0] * b[0];
+    out[1] = a[1] * b[1];
+}
+
+
+void BH_Vec2fScale(const float *a,
+                   const float b,
+                   float *out)
+{
+    out[0] = a[0] * b;
+    out[1] = a[1] * b;
+}
+
+
+void BH_Vec2fMulAdd(const float *a,
+                    const float *b,
+                    const float *c,
+                    float *out)
+{
+    out[0] = a[0] * b[0] + c[0];
+    out[1] = a[1] * b[1] + c[1];
+}
+
+
+void BH_Vec2fNegate(const float *in,
+                    float *out)
+{
+    out[0] = -in[0];
+    out[1] = -in[1];
+}
+
+
+float BH_Vec2fDot(const float *a,
+                  const float *b)
+{
+    return a[0] * b[0] + a[1] * b[1];
+}
+
+
+float BH_Vec2fCross(const float *a,
+                    const float *b)
+{
+    return a[0] * b[1] - a[1] * b[0];
+}
+
+
+float BH_Vec2fLength(const float *in)
+{
+    return sqrtf(BH_Vec2fDot(in, in));
+}
+
+
+void BH_Vec2fNormal(const float *in,
+                    float *out)
+{
+    BH_Vec2fScale(in, 1.0f / BH_Vec2fLength(in), out);
+}
+
+
+float BH_Vec2fNormalEx(const float *in,
+                       float *out)
+{
+    float length;
+
+    length = BH_Vec2fLength(in);
+    BH_Vec2fScale(in, 1.0f / length, out);
+    return length;
+}
+
+
+void BH_Vec2fMin(const float *a,
+                 const float *b,
+                 float *out)
+{
+    if (a[0] < b[0]) out[0] = a[0]; else out[0] = b[0];
+    if (a[1] < b[1]) out[1] = a[1]; else out[1] = b[1];
+}
+
+
+void BH_Vec2fMax(const float *a,
+                 const float *b,
+                 float *out)
+{
+    if (a[0] > b[0]) out[0] = a[0]; else out[0] = b[0];
+    if (a[1] > b[1]) out[1] = a[1]; else out[1] = b[1];
+}
+
+
+void BH_Vec2fLerp(const float *a,
+                  const float *b,
+                  float t,
+                  float *out)
+{
+    float tmp[2];
+
+    BH_Vec2fSub(b, a, tmp);
+    BH_Vec2fScale(tmp, t, tmp);
+    BH_Vec2fAdd(a, tmp, out);
+}
+
+
+void BH_Vec2fProject(const float *a,
+                     const float *b,
+                     float *out)
+{
+    float amount;
+
+    amount = BH_Vec2fDot(a, b) / BH_Vec2fDot(b, b);
+    BH_Vec2fScale(b, amount, out);
+}
+
+
+void BH_Vec2fBarycentric(const float *a,
+                         const float *b,
+                         const float *c,
+                         float v,
+                         float w,
+                         float *out)
+{
+    float tmp1[2], tmp2[2];
+    float u;
+
+    u = 1.0f - v - w;
+    tmp1[0] = tmp1[1] = u; BH_Vec2fMul(a, tmp1, tmp2);
+    tmp1[0] = tmp1[1] = v; BH_Vec2fMulAdd(b, tmp1, tmp2, tmp2);
+    tmp1[0] = tmp1[1] = w; BH_Vec2fMulAdd(c, tmp1, tmp2, out);
+}